201655720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1\times {\mathrm{181}}^1$

素因数の和:395

約数の個数: 128

約数和(自身を含む): 547223040

約数和(自身を除く): 345567320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 173, 181, 184, 230, 280, 322, 346, 362, 460, 644, 692, 724, 805, 865, 905, 920, 1211, 1267, 1288, 1384, 1448, 1610, 1730, 1810, 2422, 2534, 3220, 3460, 3620, 3979, 4163, 4844, 5068, 6055, 6335, 6440, 6920, 7240, 7958, 8326, 9688, 10136, 12110, 12670, 15916, 16652, 19895, 20815, 24220, 25340, 27853, 29141, 31313, 31832, 33304, 39790, 41630, 48440, 50680, 55706, 58282, 62626, 79580, 83260, 111412, 116564, 125252, 139265, 145705, 156565, 159160, 166520, 219191, 222824, 233128, 250504, 278530, 291410, 313130, 438382, 557060, 582820, 626260, 720199, 876764, 1095955, 1114120, 1165640, 1252520, 1440398, 1753528, 2191910, 2880796, 3600995, 4383820, 5041393, 5761592, 7201990, 8767640, 10082786, 14403980, 20165572, 25206965, 28807960, 40331144, 50413930, 100827860, 201655720]

約数ペア:

[(1, 201655720), (2, 100827860), (4, 50413930), (5, 40331144), (7, 28807960), (8, 25206965), (10, 20165572), (14, 14403980), (20, 10082786), (23, 8767640), (28, 7201990), (35, 5761592), (40, 5041393), (46, 4383820), (56, 3600995), (70, 2880796), (92, 2191910), (115, 1753528), (140, 1440398), (161, 1252520), (173, 1165640), (181, 1114120), (184, 1095955), (230, 876764), (280, 720199), (322, 626260), (346, 582820), (362, 557060), (460, 438382), (644, 313130), (692, 291410), (724, 278530), (805, 250504), (865, 233128), (905, 222824), (920, 219191), (1211, 166520), (1267, 159160), (1288, 156565), (1384, 145705), (1448, 139265), (1610, 125252), (1730, 116564), (1810, 111412), (2422, 83260), (2534, 79580), (3220, 62626), (3460, 58282), (3620, 55706), (3979, 50680), (4163, 48440), (4844, 41630), (5068, 39790), (6055, 33304), (6335, 31832), (6440, 31313), (6920, 29141), (7240, 27853), (7958, 25340), (8326, 24220), (9688, 20815), (10136, 19895), (12110, 16652), (12670, 15916)]