28011700

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{641}}^1$

素因数の和:697

約数の個数: 72

約数和(自身を含む): 66870720

約数和(自身を除く): 38859020

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 25, 38, 46, 50, 76, 92, 95, 100, 115, 190, 230, 380, 437, 460, 475, 575, 641, 874, 950, 1150, 1282, 1748, 1900, 2185, 2300, 2564, 3205, 4370, 6410, 8740, 10925, 12179, 12820, 14743, 16025, 21850, 24358, 29486, 32050, 43700, 48716, 58972, 60895, 64100, 73715, 121790, 147430, 243580, 280117, 294860, 304475, 368575, 560234, 608950, 737150, 1120468, 1217900, 1400585, 1474300, 2801170, 5602340, 7002925, 14005850, 28011700]

約数ペア:

[(1, 28011700), (2, 14005850), (4, 7002925), (5, 5602340), (10, 2801170), (19, 1474300), (20, 1400585), (23, 1217900), (25, 1120468), (38, 737150), (46, 608950), (50, 560234), (76, 368575), (92, 304475), (95, 294860), (100, 280117), (115, 243580), (190, 147430), (230, 121790), (380, 73715), (437, 64100), (460, 60895), (475, 58972), (575, 48716), (641, 43700), (874, 32050), (950, 29486), (1150, 24358), (1282, 21850), (1748, 16025), (1900, 14743), (2185, 12820), (2300, 12179), (2564, 10925), (3205, 8740), (4370, 6410)]