21083920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1$

素因数の和:153

約数の個数: 160

約数和(自身を含む): 61246080

約数和(自身を除く): 40162160

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 19, 20, 22, 26, 38, 40, 44, 52, 55, 65, 76, 80, 88, 95, 97, 104, 110, 130, 143, 152, 176, 190, 194, 208, 209, 220, 247, 260, 286, 304, 380, 388, 418, 440, 485, 494, 520, 572, 715, 760, 776, 836, 880, 970, 988, 1040, 1045, 1067, 1144, 1235, 1261, 1430, 1520, 1552, 1672, 1843, 1940, 1976, 2090, 2134, 2288, 2470, 2522, 2717, 2860, 3344, 3686, 3880, 3952, 4180, 4268, 4940, 5044, 5335, 5434, 5720, 6305, 7372, 7760, 8360, 8536, 9215, 9880, 10088, 10670, 10868, 11440, 12610, 13585, 13871, 14744, 16720, 17072, 18430, 19760, 20176, 20273, 21340, 21736, 23959, 25220, 27170, 27742, 29488, 36860, 40546, 42680, 43472, 47918, 50440, 54340, 55484, 69355, 73720, 81092, 85360, 95836, 100880, 101365, 108680, 110968, 119795, 138710, 147440, 162184, 191672, 202730, 217360, 221936, 239590, 263549, 277420, 324368, 383344, 405460, 479180, 527098, 554840, 810920, 958360, 1054196, 1109680, 1317745, 1621840, 1916720, 2108392, 2635490, 4216784, 5270980, 10541960, 21083920]

約数ペア:

[(1, 21083920), (2, 10541960), (4, 5270980), (5, 4216784), (8, 2635490), (10, 2108392), (11, 1916720), (13, 1621840), (16, 1317745), (19, 1109680), (20, 1054196), (22, 958360), (26, 810920), (38, 554840), (40, 527098), (44, 479180), (52, 405460), (55, 383344), (65, 324368), (76, 277420), (80, 263549), (88, 239590), (95, 221936), (97, 217360), (104, 202730), (110, 191672), (130, 162184), (143, 147440), (152, 138710), (176, 119795), (190, 110968), (194, 108680), (208, 101365), (209, 100880), (220, 95836), (247, 85360), (260, 81092), (286, 73720), (304, 69355), (380, 55484), (388, 54340), (418, 50440), (440, 47918), (485, 43472), (494, 42680), (520, 40546), (572, 36860), (715, 29488), (760, 27742), (776, 27170), (836, 25220), (880, 23959), (970, 21736), (988, 21340), (1040, 20273), (1045, 20176), (1067, 19760), (1144, 18430), (1235, 17072), (1261, 16720), (1430, 14744), (1520, 13871), (1552, 13585), (1672, 12610), (1843, 11440), (1940, 10868), (1976, 10670), (2090, 10088), (2134, 9880), (2288, 9215), (2470, 8536), (2522, 8360), (2717, 7760), (2860, 7372), (3344, 6305), (3686, 5720), (3880, 5434), (3952, 5335), (4180, 5044), (4268, 4940)]