31013320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:159

約数の個数: 128

約数和(自身を含む): 82051200

約数和(自身を除く): 51037880

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 43, 52, 65, 73, 76, 86, 95, 104, 130, 146, 152, 172, 190, 215, 247, 260, 292, 344, 365, 380, 430, 494, 520, 559, 584, 730, 760, 817, 860, 949, 988, 1118, 1235, 1387, 1460, 1634, 1720, 1898, 1976, 2236, 2470, 2774, 2795, 2920, 3139, 3268, 3796, 4085, 4472, 4745, 4940, 5548, 5590, 6278, 6536, 6935, 7592, 8170, 9490, 9880, 10621, 11096, 11180, 12556, 13870, 15695, 16340, 18031, 18980, 21242, 22360, 25112, 27740, 31390, 32680, 36062, 37960, 40807, 42484, 53105, 55480, 59641, 62780, 72124, 81614, 84968, 90155, 106210, 119282, 125560, 144248, 163228, 180310, 204035, 212420, 238564, 298205, 326456, 360620, 408070, 424840, 477128, 596410, 721240, 775333, 816140, 1192820, 1550666, 1632280, 2385640, 3101332, 3876665, 6202664, 7753330, 15506660, 31013320]

約数ペア:

[(1, 31013320), (2, 15506660), (4, 7753330), (5, 6202664), (8, 3876665), (10, 3101332), (13, 2385640), (19, 1632280), (20, 1550666), (26, 1192820), (38, 816140), (40, 775333), (43, 721240), (52, 596410), (65, 477128), (73, 424840), (76, 408070), (86, 360620), (95, 326456), (104, 298205), (130, 238564), (146, 212420), (152, 204035), (172, 180310), (190, 163228), (215, 144248), (247, 125560), (260, 119282), (292, 106210), (344, 90155), (365, 84968), (380, 81614), (430, 72124), (494, 62780), (520, 59641), (559, 55480), (584, 53105), (730, 42484), (760, 40807), (817, 37960), (860, 36062), (949, 32680), (988, 31390), (1118, 27740), (1235, 25112), (1387, 22360), (1460, 21242), (1634, 18980), (1720, 18031), (1898, 16340), (1976, 15695), (2236, 13870), (2470, 12556), (2774, 11180), (2795, 11096), (2920, 10621), (3139, 9880), (3268, 9490), (3796, 8170), (4085, 7592), (4472, 6935), (4745, 6536), (4940, 6278), (5548, 5590)]