21872040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{181}}^1$

素因数の和:267

約数の個数: 128

約数和(自身を含む): 70761600

約数和(自身を除く): 48889560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 53, 57, 60, 76, 95, 106, 114, 120, 152, 159, 181, 190, 212, 228, 265, 285, 318, 362, 380, 424, 456, 530, 543, 570, 636, 724, 760, 795, 905, 1007, 1060, 1086, 1140, 1272, 1448, 1590, 1810, 2014, 2120, 2172, 2280, 2715, 3021, 3180, 3439, 3620, 4028, 4344, 5035, 5430, 6042, 6360, 6878, 7240, 8056, 9593, 10070, 10317, 10860, 12084, 13756, 15105, 17195, 19186, 20140, 20634, 21720, 24168, 27512, 28779, 30210, 34390, 38372, 40280, 41268, 47965, 51585, 57558, 60420, 68780, 76744, 82536, 95930, 103170, 115116, 120840, 137560, 143895, 182267, 191860, 206340, 230232, 287790, 364534, 383720, 412680, 546801, 575580, 729068, 911335, 1093602, 1151160, 1458136, 1822670, 2187204, 2734005, 3645340, 4374408, 5468010, 7290680, 10936020, 21872040]

約数ペア:

[(1, 21872040), (2, 10936020), (3, 7290680), (4, 5468010), (5, 4374408), (6, 3645340), (8, 2734005), (10, 2187204), (12, 1822670), (15, 1458136), (19, 1151160), (20, 1093602), (24, 911335), (30, 729068), (38, 575580), (40, 546801), (53, 412680), (57, 383720), (60, 364534), (76, 287790), (95, 230232), (106, 206340), (114, 191860), (120, 182267), (152, 143895), (159, 137560), (181, 120840), (190, 115116), (212, 103170), (228, 95930), (265, 82536), (285, 76744), (318, 68780), (362, 60420), (380, 57558), (424, 51585), (456, 47965), (530, 41268), (543, 40280), (570, 38372), (636, 34390), (724, 30210), (760, 28779), (795, 27512), (905, 24168), (1007, 21720), (1060, 20634), (1086, 20140), (1140, 19186), (1272, 17195), (1448, 15105), (1590, 13756), (1810, 12084), (2014, 10860), (2120, 10317), (2172, 10070), (2280, 9593), (2715, 8056), (3021, 7240), (3180, 6878), (3439, 6360), (3620, 6042), (4028, 5430), (4344, 5035)]